feat(e2e): add Phase B scenarios with LLM-judged assertions and multi-project tests

Adds 6 new E2E scenarios in phase-b.test.ts covering multi-project grid
rendering, independent tab switching, status bar fleet state, and
LLM-judged agent response quality evaluation via Claude API.
Includes llm-judge.ts helper (raw Anthropic API fetch, haiku-4-5,
structured verdicts with confidence thresholds).

v2/tests/e2e/wdio.conf.js

@@ -28,6 +28,7 @@ export const config = {
   specs: [
     resolve(__dirname, 'specs/bterminal.test.ts'),
     resolve(__dirname, 'specs/agent-scenarios.test.ts'),
+    resolve(__dirname, 'specs/phase-b.test.ts'),
   ],
 
   // ── Capabilities ──